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(* Copyright (c) 2008, Adam Chlipala
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - The names of contributors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*)
(* Pretty-printing core Laconic/Web *)
structure CorePrint :> CORE_PRINT = struct
open Print.PD
open Print
open Core
structure E = CoreEnv
val debug = ref false
fun p_kind' par (k, _) =
case k of
KType => string "Type"
| KArrow (k1, k2) => parenIf par (box [p_kind' true k1,
space,
string "->",
space,
p_kind k2])
| KName => string "Name"
| KRecord k => box [string "{", p_kind k, string "}"]
| KUnit => string "Unit"
and p_kind k = p_kind' false k
fun p_con' par env (c, _) =
case c of
TFun (t1, t2) => parenIf par (box [p_con' true env t1,
space,
string "->",
space,
p_con env t2])
| TCFun (x, k, c) => parenIf par (box [string x,
space,
string "::",
space,
p_kind k,
space,
string "->",
space,
p_con (E.pushCRel env x k) c])
| TRecord (CRecord (_, xcs), _) => box [string "{",
p_list (fn (x, c) =>
box [p_name env x,
space,
string ":",
space,
p_con env c]) xcs,
string "}"]
| TRecord c => box [string "$",
p_con' true env c]
| CRel n =>
((if !debug then
string (#1 (E.lookupCRel env n) ^ "_" ^ Int.toString n)
else
string (#1 (E.lookupCRel env n)))
handle E.UnboundRel _ => string ("UNBOUND_" ^ Int.toString n))
| CNamed n =>
((if !debug then
string (#1 (E.lookupCNamed env n) ^ "__" ^ Int.toString n)
else
string (#1 (E.lookupCNamed env n)))
handle E.UnboundNamed _ => string ("UNBOUNDN_" ^ Int.toString n))
| CFfi (m, x) => box [string "FFI(", string m, string ".", string x, string ")"]
| CApp (c1, c2) => parenIf par (box [p_con env c1,
space,
p_con' true env c2])
| CAbs (x, k, c) => parenIf par (box [string "fn",
space,
string x,
space,
string "::",
space,
p_kind k,
space,
string "=>",
space,
p_con (E.pushCRel env x k) c])
| CName s => box [string "#", string s]
| CRecord (k, xcs) =>
if !debug then
parenIf par (box [string "[",
p_list (fn (x, c) =>
box [p_con env x,
space,
string "=",
space,
p_con env c]) xcs,
string "]::",
p_kind k])
else
parenIf par (box [string "[",
p_list (fn (x, c) =>
box [p_con env x,
space,
string "=",
space,
p_con env c]) xcs,
string "]"])
| CConcat (c1, c2) => parenIf par (box [p_con' true env c1,
space,
string "++",
space,
p_con env c2])
| CFold _ => string "fold"
| CUnit => string "()"
and p_con env = p_con' false env
and p_name env (all as (c, _)) =
case c of
CName s => string s
| _ => p_con env all
fun p_exp' par env (e, _) =
case e of
EPrim p => Prim.p_t p
| ERel n =>
((if !debug then
string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n)
else
string (#1 (E.lookupERel env n)))
handle E.UnboundRel _ => string ("UNBOUND_" ^ Int.toString n))
| ENamed n =>
((if !debug then
string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n)
else
string (#1 (E.lookupENamed env n)))
handle E.UnboundNamed _ => string ("UNBOUNDN_" ^ Int.toString n))
| EFfi (m, x) => box [string "FFI(", string m, string ".", string x, string ")"]
| EFfiApp (m, x, es) => box [string "FFI(",
string m,
string ".",
string x,
string "(",
p_list (p_exp env) es,
string "))"]
| EApp (e1, e2) => parenIf par (box [p_exp env e1,
space,
p_exp' true env e2])
| EAbs (x, t, _, e) => parenIf par (box [string "fn",
space,
string x,
space,
string ":",
space,
p_con env t,
space,
string "=>",
space,
p_exp (E.pushERel env x t) e])
| ECApp (e, c) => parenIf par (box [p_exp env e,
space,
string "[",
p_con env c,
string "]"])
| ECAbs (x, k, e) => parenIf par (box [string "fn",
space,
string x,
space,
string "::",
space,
p_kind k,
space,
string "=>",
space,
p_exp (E.pushCRel env x k) e])
| ERecord xes => box [string "{",
p_list (fn (x, e, _) =>
box [p_name env x,
space,
string "=",
space,
p_exp env e]) xes,
string "}"]
| EField (e, c, {field, rest}) =>
if !debug then
box [p_exp' true env e,
string ".",
p_con' true env c,
space,
string "[",
p_con env field,
space,
string " in ",
space,
p_con env rest,
string "]"]
else
box [p_exp' true env e,
string ".",
p_con' true env c]
| EFold _ => string "fold"
and p_exp env = p_exp' false env
fun p_decl env ((d, _) : decl) =
case d of
DCon (x, n, k, c) =>
let
val xp = if !debug then
box [string x,
string "__",
string (Int.toString n)]
else
string x
in
box [string "con",
space,
xp,
space,
string "::",
space,
p_kind k,
space,
string "=",
space,
p_con env c]
end
| DVal (x, n, t, e) =>
let
val xp = if !debug then
box [string x,
string "__",
string (Int.toString n)]
else
string x
in
box [string "val",
space,
xp,
space,
string ":",
space,
p_con env t,
space,
string "=",
space,
p_exp env e]
end
| DPage (c, e) => box [string "page",
p_con env c,
space,
string "=",
space,
p_exp env e]
fun p_file env file =
let
val (pds, _) = ListUtil.foldlMap (fn (d, env) =>
(p_decl env d,
E.declBinds env d))
env file
in
p_list_sep newline (fn x => x) pds
end
end
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